Joseph E Riska

US Patent:

6556752, Apr 29, 2003

Filed:

Sep 4, 2001

Appl. No.:

09/946775

Inventors:

Lu Fang - Orefield PA
Joseph Edward Riska - Macungie PA
John W. Herman - Binghamton NY
Timothy Butrie - Orefield PA
Rory Keene Schlenker - Lenharrsville PA

Assignee:

Agility Communications, Inc. - Goleta CA

International Classification:

G02B 626

US Classification:

385 52, 62 37, 62 32

Abstract:

An optoelectronic device comprising a laser and a lens for generating collimated light, a locker including an etalon for wavelength locking the collimated light, a first thermoelectric cooler coupled to the laser, and a second thermoelectric cooler coupled to the locker, wherein the first and second thermo-electric coolers arc independently controlled and the second thermo-electric cooler provides for temperature tuning of the etalon.

US Patent:

7783142, Aug 24, 2010

Filed:

Dec 24, 2008

Appl. No.:

12/344127

Inventors:

Joseph Edward Riska - Macungie PA, US

Assignee:

Infinera Corporation - Sunnyvale CA

International Classification:

G02B 6/12
G02B 6/42
G02B 6/30
G02B 6/38
G02B 6/36
G02B 6/10
H01L 23/52

US Classification:

385 14, 385 15, 385 39, 385 49, 385 52, 385 63, 385 88, 385 89, 385 92, 385 93, 385 94, 385129, 385130, 385131, 385132, 257736, 257739, 257777, 257778, 257779, 257782, 257783

Abstract:

Consistent with the present disclosure, a package is provided in which the PLC substrate, for example, is bonded to the underyling carrier though a limited contact area. The rest of the substrate is detached from the carrier so that stresses are applied to a limited portion of the PLC substrate. The PLC itself, however, is provided over that portion of the substrate that is detached from the carrier, and thus experiences reduced stress. Accordingly, high modulus adhesives, as well as solders, may be used to bond the PLC substrate to the carrier, thereby resulting in a more robust mechanical structure.

US Patent:

7802924, Sep 28, 2010

Filed:

Sep 29, 2008

Appl. No.:

12/239848

Inventors:

Joseph Edward Riska - Macungie PA, US
Christopher E. Young - Fleetwood PA, US

Assignee:

Infinera Corporation - Sunnyvale CA

International Classification:

G02B 6/38

US Classification:

385 59, 385 60

Abstract:

Consistent with the present disclosure, a ferrule is provided that includes first and second channels, for example. Multiple fibers of a ribbon cable, for example, are divided into groups and fed into corresponding channels of the ferrule. Since multiple channels are provided, however, each channel can be made relatively narrow. Thus, by providing smaller channel widths, the fibers in those channels experience less thermal stress. Moreover, the channels are spaced from one another so that the lateral spacing between adjacent fibers in the ribbon cable is maintained in the ferrule. As a result, the fibers are not bent laterally, and thus may experience little bending stress.

US Patent:

58388591, Nov 17, 1998

Filed:

Nov 25, 1996

Appl. No.:

8/756220

Inventors:

Timothy Butrie - Orefield PA
Shigemasa Enoeda - Okaya, JP
Joseph Edward Riska - Macungie PA
Stephen James Salko - Weatherly PA
Thomas Stanley Stakelon - Allentown PA
Alka Swanson - San Diego CA
Toshimichi Yasuda - Okaya, JP

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

G02B 636

US Classification:

385 92

Abstract:

An optical transceiver assembly for use in a bidirectional system includes a beam splitter to direct an incoming signal to a photodiode. An outgoing signal from a laser diode is partially transmitted and partially reflected by the splitter. The reflected signal, which may reach the photodiode, constitutes crosstalk which is reduced by orienting the polarization direction of the splitter essentially parallel to that of the outgoing signal from the laser diode. In another embodiment, which enhances coupling efficiency, a single element asphere lens is positioned between the laser diode and the splitter.

US Patent:

60756357, Jun 13, 2000

Filed:

Sep 4, 1997

Appl. No.:

8/923200

Inventors:

Timothy Butrie - Orefield PA
Shigemasa Enoeda - Okaya, JP
Joseph Edward Riska - Macungie PA
Stephen James Salko - Weatherly PA
Thomas Stanley Stakelon - Allentown PA
Alka Swanson - Lansdale PA
Toshimichi Yasuda - Okaya, JP

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

H04B 1012

US Classification:

359159

Abstract:

An optical transceiver assembly for use in a bidirectional system includes an optical fiber to which an outgoing optical signal is coupled. To reduce reflections from the end face of the fiber, the end face is beveled at an acute angle. phi. ' to the normal to the fiber axis, and the fiber axis is tilted at an acute angle. theta. to the transmission axis. Preferably,. phi. '. apprxeq. 2. theta. In this manner, crosstalk is reduced without significantly sacrificing coupling efficiency.

US Patent:

57968993, Aug 18, 1998

Filed:

Nov 25, 1996

Appl. No.:

8/755635

Inventors:

Timothy Butrie - Orefield PA
Shigemasa Enoeda - Okaya, JP
Joseph Edward Riska - Macungie PA
Stephen James Salko - Weatherly PA
Thomas Stanley Stakelon - Allentown PA
Alka Swanson - San Diego CA
Toshimichi Yasuda - Okaya, JP

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

G02B 636

US Classification:

385 92

Abstract:

An optical transceiver assembly for use in a bidirectional system includes a beam splitter to direct an incoming signal to a photodiode. An outgoing signal from a laser diode is partially transmitted and partially reflected by the splitter. The reflected signal, which may reach the photodiode, constitutes crosstalk which is reduced by means of a cavity positioned to receive the reflected signal and an oblique surface within the cavity adapted to prevent much of the reflected signal from reaching the photodiode.

US Patent:

20160043489, Feb 11, 2016

Filed:

Aug 5, 2014

Appl. No.:

14/452197

Inventors:

- Annapolis Junction MD, US
Eugene Messenger - Kutztown PA, US
Michael Sipics - Macungie PA, US
Joseph Edward Riska - Macungie PA, US
Jiaming Zhang - Macungie PA, US

International Classification:

H01R 12/71
H01R 43/26
H01R 4/38

Abstract:

An apparatus including a bridge member and a clamp is disclosed. The bridge member is positioned in a first plane and has a substrate with a first surface and a second surface; and a plurality of distinct conductive pillars formed on the second surface of the substrate. The clamp has a body, a proximal end and a distal end. The body is positioned in a second plane above the first plane with the second plane being within 2 degrees of parallel to the first plane. The proximal end is positioned along the second plane; and the distal end has a plurality of prongs. The distal end is offset from the second plane in a direction toward the bridge member such that each prong contacts the first surface of the substrate.

US Patent:

20150180580, Jun 25, 2015

Filed:

Apr 2, 2013

Appl. No.:

13/855552

Inventors:

INFINERA CORP. - , US
Radhakrishnan L. Nagarajan - Cupertino CA, US
Jiaming Zhang - Macungie PA, US
Joseph Edward Riska - Macungie PA, US
Donald J. Pavinski - West Pittston PA, US
Jie Tang - Fogelsville PA, US
Timothy Butrie - Hellertown PA, US

International Classification:

H04B 10/50
H04B 10/516

Abstract:

A photonic transmitter, comprises a modulator driver having a first and second output ports, a photonic integrated transmitter circuit having a modulator having a first and a second input line, and a first input port electrically coupled with the first input line and a second input port electrically coupled with the second input line, and an interconnect bridge assembly, including a first termination resistor, a second termination resistor, and a substrate. An impedance-controlled transmission structure is formed in the substrate, and has: (a) an impedance control section including a first and a second signal lines electrically insulated from one another; and (b) a transmission section including a third and a fourth signal line coupled with termination resistor. The interconnect bridge assembly transmits an impedance controlled differential electrical signal from the modulator driver to the modulator, and transmits the electrical signal from the modulator to the first and second termination resistors.